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Study sets matching "statistics chapter 4"

40 terms
Chapter 4 Statistics Vocabulary
Population
Sample
Sample Survey
Convenience Sample
The ... in a statistical study is the entire group of individ…
A subset of individuals in the population from which we actua…
A study that uses an organized plan to choose a sample that r…
Choosing individuals from the population who are easy to reac…
Population
The ... in a statistical study is the entire group of individ…
Sample
A subset of individuals in the population from which we actua…
20 terms
Statistics - Chapter 4
comparison test for linear correlation
correlation coefficient
scatterplot
response variable
helps determine whether the correlation coefficient is strong…
measures the strength of the linear association between two v…
plot of the values of y, the response variable, vs the corres…
y variable in regression analysis; dependent; outcome
comparison test for linear correlation
helps determine whether the correlation coefficient is strong…
correlation coefficient
measures the strength of the linear association between two v…
39 terms
AP Statistics - Chapter 4
Population
Sample
Sample Survey
Convenience Sample
The entire group of individuals about which we want information
The part of the population from which we actually collect inf…
A survey which is carried out using a sampling method, i.e. i…
Choosing individuals who are easiest to reach...almost guaran…
Population
The entire group of individuals about which we want information
Sample
The part of the population from which we actually collect inf…
52 terms
Chapter 4 AP Statistics
Bias
Census
Cluster sample
Convenience sample
The design of a statistical study shows bias if it systematic…
A study that attempts to collect data from every individual i…
To take a cluster sample, first divide the population into sm…
A sample selected by taking the members of the population tha…
Bias
The design of a statistical study shows bias if it systematic…
Census
A study that attempts to collect data from every individual i…
27 terms
AP Statistics: Chapter 4
Exponential function
Power function
What lists are used for exponential fu…
What lists are used for power functions?
y = abˣ (variable = exponent)
y = axᵇ (variable = base)
(L1, L4)
(L3, L4)
Exponential function
y = abˣ (variable = exponent)
Power function
y = axᵇ (variable = base)
12 terms
Statistics-Chapter 4
Bayes Theorem
Multiplication of Probabilities(And)
Addition of Probablilities(Or)
Mutually Exclusive events
Based on conditions that might be related to the event. P(A|B…
N means multiply
U means add
Bayes Theorem
Based on conditions that might be related to the event. P(A|B…
Multiplication of Probabilities(And)
N means multiply
45 terms
The Practice of Statistics - Chapter 4
Population
Sample
Sample survey
Convenience sample
in a statistical study is the entire group of individuals abo…
is the part of the population from which we actually collect…
A study that asks questions of a sample drawn from some popul…
choosing individuals who are easiest to reach.
Population
in a statistical study is the entire group of individuals abo…
Sample
is the part of the population from which we actually collect…
8 terms
Statistics Chapter 4
scatter diagram
explanatory variable
response variable
least-squares line
points are plotted on a graph (x,y) and a correlation is found
x value
y value
y= a+bx
scatter diagram
points are plotted on a graph (x,y) and a correlation is found
explanatory variable
x value
37 terms
Statistics Chapter 4
Population
Sample
Sample Survey
Convenience Sample
The entire group of individuals we want to know about. For ex…
A subset of individuals in the population from which we actua…
Sample survey is a study in which you obtain data from a subs…
Choosing individuals from the population who are easy to reac…
Population
The entire group of individuals we want to know about. For ex…
Sample
A subset of individuals in the population from which we actua…
29 terms
Statistics Chapter 4
Bi-variate Data
Response Variable
Explanatory/Predictor Variable
Scatter Diagram
Data in which two variables are measured on an individual
The variable whose value can be explained by the value of the…
The variable whose value explains the response variable
A graph that shows the relationship between two quantitative…
Bi-variate Data
Data in which two variables are measured on an individual
Response Variable
The variable whose value can be explained by the value of the…
25 terms
Chapter 4 Statistics
Experiment
Sample space
Tree diagram
Event
An activity in which there are at least two possible outcomes…
S': a listing of all possible outcomes, using set notation
A visual road map of possible outcomes in an experiment
Any collection of outcomes from an experiment
Experiment
An activity in which there are at least two possible outcomes…
Sample space
S': a listing of all possible outcomes, using set notation
22 terms
Statistics Chapter 4
Random Variable
A random variable is ________ if its p…
A random variable is _________ if its…
Probability distribution
a numerical variable associated with the outcomes of a random…
discrete
continuous
of a discrete random variable x is a list (or description) of…
Random Variable
a numerical variable associated with the outcomes of a random…
A random variable is ________ if its p…
discrete
9 terms
Statistics - Chapter 4 Vocab
Response Variable
Explanatory Variable
Scatter Diagram
Scatter Plot
The dependent variable
The independent variable; explains he response variable
Graph showing the relationship between two numeric variables:…
Displays the relationship between two variables. DO NOT conne…
Response Variable
The dependent variable
Explanatory Variable
The independent variable; explains he response variable
36 terms
AP Statistics Chapter 4
What is the population in a statistica…
What is the sample in a statistical st…
What is a convenience sample, and why…
What is a bias?
the entire group of individuals about which we want information
part of the population from which we actually collect informa…
choosing individuals who are easiest to reach results. Howeve…
design of a statistical study that systematically favors cert…
What is the population in a statistica…
the entire group of individuals about which we want information
What is the sample in a statistical st…
part of the population from which we actually collect informa…
40 terms
Elementary Statistics Chapter 4
Experiment
Outcomes
Sample space
Tree Diagram
A process that, when performed, results in one and only one o…
These observations are called the outcomes of the experiment.
The collection of all outcomes for an experiment is called a…
Experiment
A process that, when performed, results in one and only one o…
Outcomes
These observations are called the outcomes of the experiment.
19 terms
Statistics Chapter 4
Stem and leaf
What is an outlier?
What is the general formula for outlie…
What does a histogram enable you to see?
To order and present data given to two or three significant f…
An extreme value that lies outside the overall pattern of the…
x > Q₃ + 1.5 × IQR... x < Q₁ + 1.5 × IQR
A good picture of the distribution, a rough location, the gen…
Stem and leaf
To order and present data given to two or three significant f…
What is an outlier?
An extreme value that lies outside the overall pattern of the…
50 terms
Chapter 4 AP Statistics
Bias
Census
Cluster sample
Convenience sample
When a statistical study systematically favors certain outcom…
A study that attempts to collect data from every individual i…
To take a cluster sample, first divide the population into sm…
A sample selected by taking the members of the population tha…
Bias
When a statistical study systematically favors certain outcom…
Census
A study that attempts to collect data from every individual i…
26 terms
Statistics Chapter 4 Quiz 2 Review
Stratification
Stratified random sampling
Cluster Sample
Two Stage sampling
A classification of the units in the population into homogeno…
Stratifying the population and then taking a simple random sa…
When the units in the population are assigned to non-overlapp…
A sampling procedure that involves two steps. For example, ta…
Stratification
A classification of the units in the population into homogeno…
Stratified random sampling
Stratifying the population and then taking a simple random sa…
39 terms
AP Statistics - Chapter 4
Population
Sample
Sample Survey
Convenience Sample
The entire group of individuals about which we want information
The part of the population from which we actually collect inf…
A survey which is carried out using a sampling method, i.e. i…
Choosing individuals who are easiest to reach...almost guaran…
Population
The entire group of individuals about which we want information
Sample
The part of the population from which we actually collect inf…
23 terms
AP Statistics Chapter 4
sample mean
is sample mean sensitive or insensitiv…
population mean
sample median
= sum of all observations in the sample/ number of observatio…
sensitive
the average x value of the entire population
the middle value in the ordered list of observations... the sing…
sample mean
= sum of all observations in the sample/ number of observatio…
is sample mean sensitive or insensitiv…
sensitive
19 terms
Statistics Chapter 4
variability
measures of variability
range
when to use the range
measure of dispersion of scores in a distribution
range, variance, standard deviation
difference between largest and smallest values
when data sets are small and do not have outliers
variability
measure of dispersion of scores in a distribution
measures of variability
range, variance, standard deviation
37 terms
Statistics Chapter 4
Population
Sample
Sample Survey
Convenience Sample
The entire group of individuals we want to know about. For ex…
A subset of individuals in the population from which we actua…
Sample survey is a study in which you obtain data from a subs…
Choosing individuals from the population who are easy to reac…
Population
The entire group of individuals we want to know about. For ex…
Sample
A subset of individuals in the population from which we actua…
23 terms
Business Statistics Chapter 4
Probability
Experiment
Sample Space
Sample Point
A numerical measure of the likelihood that an event will occur
A process that generates well-defined outcomes
The set of all experimental outcomes
An element of the sample space. This represents an experiment…
Probability
A numerical measure of the likelihood that an event will occur
Experiment
A process that generates well-defined outcomes
18 terms
Statistics Vocabulary - Chapter 4
Bivariate Data
Response Variable
Explanatory Variable
Scatter Diagram
data in which two variables are measured on an individual.
the variable whose value can be explained by the value of the…
the variable that explains or influences changes in the respo…
a graph that shows the relationship between two quantitative…
Bivariate Data
data in which two variables are measured on an individual.
Response Variable
the variable whose value can be explained by the value of the…
8 terms
Statistics: Chapter 4 Vocabulary
Scatter Diagram
Explanatory Variable
Response Variable
Correlation Coefficient
A graph in which the values of two variables are plotted alon…
X-Axis
Y-Axis
r=[nΣ(xy)-(Σx)(Σy)]/[√nΣ(x^2)-(Σx)^2] * [√nΣ(y^2)-(Σy)^2] ; A…
Scatter Diagram
A graph in which the values of two variables are plotted alon…
Explanatory Variable
X-Axis
11 terms
Statistics Chapter 4
Probablility
Probability of an event
Three probability assignments
intuition
Measure of (quantity) something happening between 0-1 chance…
has to either be greater or equals to 0 but less than or equa…
1) intuition... 2) relative frequency... 3) Equally likely outcomes
(when not given enough information), this incorporates pass e…
Probablility
Measure of (quantity) something happening between 0-1 chance…
Probability of an event
has to either be greater or equals to 0 but less than or equa…
8 terms
Statistics Chapter 4
Unit
Census
Frame
Simple Random Sampling
Single individual subject or object
A survey in which the entire population in measures
A list of units from which the sample is chosen
A sampling procedure that assures each element in the populat…
Unit
Single individual subject or object
Census
A survey in which the entire population in measures
31 terms
Chapter 4 Statistics Vocabulary
Population
Sample
Sample Survey
Convenience Sample
The ... in a statistical study is the entire group of individ…
A subset of individuals in the population from which we actua…
A study that uses an organized plan to choose a sample that r…
Choosing individuals from the population who are easy to reac…
Population
The ... in a statistical study is the entire group of individ…
Sample
A subset of individuals in the population from which we actua…
14 terms
Statistics Chapter 4
RARE EVENT RULE FOR INFERENTIAL STATIS…
event
Simple event
sample space
if under a given assumption, the probability of a particular…
any collection of results or outcomes of a procedure
an outcome or an event that cannot be further broken down int…
for a procedure consists of all possible simple events. The s…
RARE EVENT RULE FOR INFERENTIAL STATIS…
if under a given assumption, the probability of a particular…
event
any collection of results or outcomes of a procedure
Statistics Chapter 4
Univariate data
Bivariate data
patterns in bivariate data
looks at only one variable
examines two variables
Scatter plots reveal what?
Univariate data
looks at only one variable
Bivariate data
examines two variables
Chapter 4 Statistics
Scatter diagram
Explanatory variable
Response variable
Correlation Coefficient
Data pairs (x,y) are plotted as individual points
First variable on the pair
Second variable in the pair
Numerical value that measure the strength of a linear relatio…
Scatter diagram
Data pairs (x,y) are plotted as individual points
Explanatory variable
First variable on the pair
28 terms
Statistics Chapter 4
classical probability rule
combinations
complementary events
Compound event
the method of assigning probabilities to outcome or events of…
the number of ways x elements can be selected from n elements…
two events that taken together include all the outcomes for a…
An event that contains more than one outcome of an experiment…
classical probability rule
the method of assigning probabilities to outcome or events of…
combinations
the number of ways x elements can be selected from n elements…
45 terms
The Practice of Statistics - Chapter 4
Population
Sample
Sample survey
Convenience sample
in a statistical study is the entire group of individuals abo…
is the part of the population from which we actually collect…
A study that asks questions of a sample drawn from some popul…
choosing individuals who are easiest to reach.
Population
in a statistical study is the entire group of individuals abo…
Sample
is the part of the population from which we actually collect…
39 terms
Statistics chapter 4
Event
Simple Event
Sample Space
P
any collection of results or outcomes of a procedure
an outcome or an event that cannot be further broken down int…
for a procedure consists of all possible simple events; that…
denotes a probability.
Event
any collection of results or outcomes of a procedure
Simple Event
an outcome or an event that cannot be further broken down int…
14 terms
Statistics Chapter 4
Common Math
Common graph
Regression Analysis
Scatter Plot
We are given an equation and we use it to solve problems
A line showing the relationship between the two variables.
Instead of an equation, we are given data in the form of a ta…
The graph of the set of points whose coordinates match the da…
Common Math
We are given an equation and we use it to solve problems
Common graph
A line showing the relationship between the two variables.
41 terms
Statistics chapter 4
Sample survey
Population
Sample
Census
Is a study that uses an organized plan to choose a sample tha…
The entire group of individuals that we want information about
Is a part of the population that we actually examine in order…
Attempts to contact every individual in the entire population
Sample survey
Is a study that uses an organized plan to choose a sample tha…
Population
The entire group of individuals that we want information about
11 terms
Statistics Chapter 4
Descriptive Statistics
Deviation
Measures of Central Tendency
Measures of Variability
Statistical procedures used to summarize and describe the dat…
The difference of a score in a set of scores from the mean of…
Numbers that represent the average or typical score obtained…
Numbers that indicate how much scores differ from each other…
Descriptive Statistics
Statistical procedures used to summarize and describe the dat…
Deviation
The difference of a score in a set of scores from the mean of…
8 terms
statistics chapter 4
scatter diagram
explanatory variable
response variable
sample correlation coefficient
scatter diagram
explanatory variable
15 terms
Statistics Chapter 4
Bernoulli Trials
Binomial Experiment
Binomial Probability Distribution
Expected value
an experiment with the following characteristics:... 1. There ar…
a statistical experiment that satisfies the following three c…
a discrete random variable (RV) that arises from Bernoulli tr…
expected arithmetic average when an experiment is repeated ma…
Bernoulli Trials
an experiment with the following characteristics:... 1. There ar…
Binomial Experiment
a statistical experiment that satisfies the following three c…
Statistics Chapter 4
Scatterplot
Trend
Shape
Strength
Each point represents one observation
centre
shape
how tightly pact together or dispersed they are
Scatterplot
Each point represents one observation
Trend
centre
8 terms
Statistics Chapter 4 Vocab
Scatter Diagram
Explanatory Variable
REsponse Variable
Correlation Coefficient
A graph in which the values of two variables are plotted alon…
First variable in the pair (x).
Second variable in the pair (y).
A numerical value that measures the strength of a linear rela…
Scatter Diagram
A graph in which the values of two variables are plotted alon…
Explanatory Variable
First variable in the pair (x).
15 terms
Statistics Chapter 4
Area Principle
Bar Chart
Cell
Column Percent
In a statistics display, each data value is represented by th…
A chart that represents the count (or percentage) of each cat…
Each location in a contingency table, representing the values…
The proportion of each column contained in the cell of a freq…
Area Principle
In a statistics display, each data value is represented by th…
Bar Chart
A chart that represents the count (or percentage) of each cat…
10 terms
Statistics Chapter 4
Probability
Sample Space
Event
Probability of an Event
the study of random phenomena. The probability of any outcome…
the set of all possible outcomes of an experiment with random…
an outcome or outcomes in a sample space... example: Experiment…
number of ways the event can occur/number of members in the s…
Probability
the study of random phenomena. The probability of any outcome…
Sample Space
the set of all possible outcomes of an experiment with random…
27 terms
Statistics Chapter 4 Vocabulary
Response Variable
Scatter Diagram
Bivariate Data
Explanatory Variable
The Variable whose value can be explained by the value of the…
A graph that shows the relationship between two quantitative…
Data in which two variables are measured on and individual
Helps explain variability in the response variable
Response Variable
The Variable whose value can be explained by the value of the…
Scatter Diagram
A graph that shows the relationship between two quantitative…
14 terms
Statistics Chapter 4
Rare event rule for inferential statis…
event
Simple event
Sample Space
If, under a given assumption, the probability of a particular…
any collection of results or outcomes of a procedure
An outcome or an event that cannot be further broken down int…
The sample space for a procedure consists of all possible sim…
Rare event rule for inferential statis…
If, under a given assumption, the probability of a particular…
event
any collection of results or outcomes of a procedure
19 terms
Statistics (Chapter 4)
Bivariate data
Response variable
Explanatory variable
Predictor variable
Data in which two variables are measured.
Variable that is measured; the dependent variable.
Variable that is controlled; the independent variable.
Variable that is manipulated in an experiment.
Bivariate data
Data in which two variables are measured.
Response variable
Variable that is measured; the dependent variable.
11 terms
Chapter 4 Statistics
Biased statistic
Degrees of freedom (df)
Deviation score
Population standard deviation
A statistic that, on average, consitently tends to overestima…
Degrees of freedom = df = n -1, measures the number of scores…
The distance (and direction) from the mean to a specific scor…
The square root of the population variance; a measure of the…
Biased statistic
A statistic that, on average, consitently tends to overestima…
Degrees of freedom (df)
Degrees of freedom = df = n -1, measures the number of scores…
11 terms
Statistics Chapter 4
variability
range
deviation
population variance equation
provides a quantitative measure of the differences between sc…
distance from the upper real limit of the highest score to th…
distance from the mean
o^2=SS/N
variability
provides a quantitative measure of the differences between sc…
range
distance from the upper real limit of the highest score to th…
37 terms
AP Statistics - Chapter 4 Vocabulary
Population
Sample
Sample Survey
Convenience Sample
The entire group of individuals about which we want information
The part of the population from which we actually collect inf…
A survey which is carried out using a sampling method, i.e. i…
Choosing individuals who are easiest to reach...almost guaran…
Population
The entire group of individuals about which we want information
Sample
The part of the population from which we actually collect inf…
13 terms
Statistics Chapter 4 Vocabulary
Outcome
Sample space
Relative frequency
Law of large numbers
possible result of an outcome
all possible outcomes
the ratio of the number of times the event occurs to the numb…
In the long run, as the sample size increases, the relative f…
Outcome
possible result of an outcome
Sample space
all possible outcomes
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